Tool



E. ANHEUSER.

TOOL.

APPLICATlON FILED DEC. t. 1919.

1,379,737. Patented May 31 1921 0 10 10 11 s nzre'rdor 'V/I/W Ill/lrim/x 52km liar mags.

' UNEED .fiTATrES FATE]? @Efl ii ERNST ANHE'USER, OF BACENE, 'WISCONSIN.

TOOL.

T 0 all 20 7mmit may concern lowing is a description, reference beinghad to the accompanying drawings, which are a part of thisspecification.

.The present invention relates to certain new and useful improvements inrotary rasps.

Rotary rasps are generally used in combination with a wire brush bymounting the brush on one end of a driven shaft and the rasp on theother end thereof. Heretofore it has been common practice to make therasps out of a solid piece of steel which has proven very unsatisfactoryas the driven shaft is unbalanced, the wire wheel weighing about a}pounds, whereas the solid steel rasp weighs approximately 18 to 20pounds.

Hence with the above and other inherent objections in mind, my inventionhas for one of its objects to provide a rotary rasp which will be soconstructed as to be extremely light in weight and to evenly balancewith the usual wire brush or the like generally employed in combinationtherewith.

Another objection to the solid form of rotary rasp is that the same isvery expensive as when the teeth become dull it is necessary to buy anentirely new tool. There fore, my invention has for another of itsobjects to provide a rotary rasp in which the rasp proper is carried bya holder and is capable of ready removal.

A further object of this invention is to provide a rotary rasp formedfrom tubular material and having a holder for securing the same upon adriven shaft.

With the above and other objects in view which will appear as thedescription proceeds, my invention resides in the novel construction,combination and arrangement of parts, substantially as hereinafterdescribed and more particularly defined by the appended claims, it beingunderstood that such changes in the precise embodiment of thehereindisclosed invention may be made as come within the scope of theclaims.

In the accompanying drawing I have illustrated one complete example ofthe physical embodiment of my invention con- Specificaticn of LettersPatent.

Application filed December 1, 1919. Serial No. 341,569.

structed according to the best mode I have so far devised for thepractical application of the principles thereof, and in which:

Figure 1 is a plan view of my novel form rasp illustrating the same asarranged on driven shaft with a rotary wire brush. ig. 2 is an enlargedview of my novel foun rasp detached, said view having parts roken awayand in section to more clearl illustrate its details of construction,and

Fig. 3 is an enlarged fragmentary sectional view taken through a portionof my novel form of rasp on the line 3-3 of Fig. 2 to illustrate thenovel form of cutting teeth I provide.

Referring now more particularly to the accompanying drawing, the numeral5 designates a machine standard having a shaft 6 j ournaled in the upperend thereof, which shaft is rotated by means of a motor direct therewithor by means of a driven belt 7. lVhile in Fig. l I have shown my novelform of rotary rasp as fixed to one end of the shaft 6, to the other endof which is fixed a wire brush or the like 8, it will be understood thatmy invention is readily capable of use alone, but it being commonpractice in the art to mount a wire brush or the like on one end of thedriven shaft and a rotary rasp on the other.

My novel form of rotary rasp consists of a tubular member or ring 9having a plural ity of cutting teeth 10 formed thereon by gouging theperiphery thereof as at 11, see Fig. 5. The ring member 9 is formed fromordinary steel tubing and hardened, as will be later described. Theteeth 10 are arranged in staggered relation as best shown in Fig. 2 sothat material cut thereby will work to one side through the alinedstaggered channels formed therebetween as will be seen by reference toFig. 2.

The rasp proper is detachably mounted upon a holder whereby the same maybe renewed when the cutting teeth 10 thereof have become worn or broken.The novel holder which I employ consists of two complementary flangemembers 12 having hub members 13 formed centrally therein and providedwith axially alined bores 14 for en-. gagement by the drive shaft 6 orthe like and each having a peripheral rim 15 for telescoping engagementwith the adjacent ends of the ring or rasp proper, as best shown in Fig.2. r

The flange members 12 have a plurality of spaced apertures 16 thereinadapted to be brought into alinement to receive suitable binding orsecuring members 17 for holding the members 12 together and binding therasp member'therebetween. The telescoping engagement of the members 12with the rasp member is limited by means of a laterally extendingannular rib lSeformed on each 1 member 12 adjacent its outer peripheraledge, the ribs 18 binding against the edges of the rasp member, as bestshown in Fig. 2

From the foregoing description taken in connection with the accompanyingdrawing,it will be at once apparent to those skilled in the art to whichan invention of this kind appertains that I provide a rotary rasp forthe purpose described which will be extremely light in weight whencompared to the old type ofrotary rasp, which will i be readilyrenewable when the cutting teeth thereof have become worn and lost theircutting qualities and which will be practical for the purpose described.

IVhat I claim for invention 1s: 1.- A'tool comprising a one-pieceannular tubular member formed from a length pipe, cutting teeth stuck upfrom the outer peripheral surface thereof, and a said member.

2. A tool comprising a one-piece ringshaped rasp member, and a holderfor said member thereon.

4. A rotary tool comprising two complementary flange members, an annularrib formed on each flange member adjacent its outer peripheral edge, atubular rasp member engageable over the inner portion of the peripheryof each flange member, said an nular ribs limiting this telescopingengagement of the rasp member over the flange members, and means fordrawing the flange members toward each other to secure the rasp memberthereon. V V

In testimony whereof, I afiix my signa- ERNST ANHEUSER.

- ture.

holder for i

